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How many valence electrons do each of the elements in the periodic table have? |
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The number of valence electrons depends on the group number(usually). Valence electrons are the last number in the electron shell sequence. VALENCE ELECTRONS ARE NOT EQUAL TO THE NUMBER OF PROTONS OR NEUTRONS OR THE ATOMIC NUMBER!!!
For the most part, their number is equal to the number of the group they are in. Group one elements(Li,K,Na, Etc.) will have 1 valence electron. Group 2 will have 2. This does not always follow in the transition metals (groups 3-12) Group 13 should have 3, 14 4, 15 5, 16 6 and 17 7. Group 18, the noble gases will ALWAYS HAVE 8 VALENCE ELECTRONS
For the most part, their number is equal to the number of the group they are in. Group one elements(Li,K,Na, Etc.) will have 1 valence electron. Group 2 will have 2. This does not always follow in the transition metals (groups 3-12) Group 13 should have 3, 14 4, 15 5, 16 6 and 17 7. Group 18, the noble gases will ALWAYS HAVE 8 VALENCE ELECTRONS
First answer by JEK. Last edit by KarategrlPCS93. Contributor trust: 8 [recommend contributor]. Question popularity: 65 [recommend question].
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